/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.attribute.module;

import proguard.classfile.Clazz;
import proguard.classfile.attribute.Attribute;
import proguard.classfile.attribute.module.visitor.*;
import proguard.classfile.attribute.visitor.*;
import proguard.classfile.constant.visitor.ConstantVisitor;

/**
 * This Attribute represents a module attribute.
 *
 * @author Joachim Vandersmissen
 */
public class ModuleAttribute extends Attribute {
    public int u2moduleNameIndex;
    public int u2moduleFlags;
    public int u2moduleVersionIndex;
    public int u2requiresCount;
    public RequiresInfo[] requires;
    public int u2exportsCount;
    public ExportsInfo[] exports;
    public int u2opensCount;
    public OpensInfo[] opens;
    public int u2usesCount;
    public int[] u2uses;
    public int u2providesCount;
    public ProvidesInfo[] provides;

    /**
     * Creates an uninitialized ModuleAttribute.
     */
    public ModuleAttribute() {}

    /**
     * Creates an initialized ModuleAttribute.
     */
    public ModuleAttribute(int u2attributeNameIndex, int u2moduleNameIndex, int u2moduleFlags, int u2moduleVersionIndex,
        int u2requiresCount, RequiresInfo[] requires, int u2exportsCount, ExportsInfo[] exports, int u2opensCount,
        OpensInfo[] opens, int u2usesCount, int[] u2uses, int u2ProvidesCount, ProvidesInfo[] provides) {
        super(u2attributeNameIndex);

        this.u2moduleNameIndex = u2moduleNameIndex;
        this.u2moduleFlags = u2moduleFlags;
        this.u2moduleVersionIndex = u2moduleVersionIndex;
        this.u2requiresCount = u2requiresCount;
        this.requires = requires;
        this.u2exportsCount = u2exportsCount;
        this.exports = exports;
        this.u2opensCount = u2opensCount;
        this.opens = opens;
        this.u2usesCount = u2usesCount;
        this.u2uses = u2uses;
        this.u2providesCount = u2ProvidesCount;
        this.provides = provides;
    }

    // Implementations for Attribute.

    public void accept(Clazz clazz, AttributeVisitor attributeVisitor) {
        attributeVisitor.visitModuleAttribute(clazz, this);
    }

    /**
     * Applies the given constant pool visitor to the Utf8 constant of the name, if any.
     */
    public void nameAccept(Clazz clazz, ConstantVisitor constantVisitor) {
        if (u2moduleNameIndex != 0) {
            clazz.constantPoolEntryAccept(u2moduleNameIndex, constantVisitor);
        }
    }

    /**
     * Applies the given constant pool visitor to the Utf8 constant of the version, if any.
     */
    public void versionAccept(Clazz clazz, ConstantVisitor constantVisitor) {
        if (u2moduleVersionIndex != 0) {
            clazz.constantPoolEntryAccept(u2moduleVersionIndex, constantVisitor);
        }
    }

    /**
     * Applies the given visitor to all requires.
     */
    public void requiresAccept(Clazz clazz, RequiresInfoVisitor requiresInfoVisitor) {
        for (int index = 0; index < u2requiresCount; index++) {
            // We don't need double dispatching here, since there is only one
            // type of RequiresInfo.
            requiresInfoVisitor.visitRequiresInfo(clazz, requires[index]);
        }
    }

    /**
     * Applies the given visitor to all exports.
     */
    public void exportsAccept(Clazz clazz, ExportsInfoVisitor exportsInfoVisitor) {
        for (int index = 0; index < u2exportsCount; index++) {
            // We don't need double dispatching here, since there is only one
            // type of ExportsInfo.
            exportsInfoVisitor.visitExportsInfo(clazz, exports[index]);
        }
    }

    /**
     * Applies the given visitor to all exports.
     */
    public void opensAccept(Clazz clazz, OpensInfoVisitor opensInfoVisitor) {
        for (int index = 0; index < u2opensCount; index++) {
            // We don't need double dispatching here, since there is only one
            // type of OpensInfo.
            opensInfoVisitor.visitOpensInfo(clazz, opens[index]);
        }
    }

    /**
     * Applies the given constant pool visitor to all uses.
     */
    public void usesAccept(Clazz clazz, ConstantVisitor constantVisitor) {
        for (int index = 0; index < u2usesCount; index++) {
            clazz.constantPoolEntryAccept(u2uses[index], constantVisitor);
        }
    }

    /**
     * Applies the given visitor to all provides.
     */
    public void providesAccept(Clazz clazz, ProvidesInfoVisitor providesInfoVisitor) {
        for (int index = 0; index < u2providesCount; index++) {
            // We don't need double dispatching here, since there is only one
            // type of ProvidesInfo.
            providesInfoVisitor.visitProvidesInfo(clazz, provides[index]);
        }
    }
}
